Here are some of the tools that will help you with your Wikis and Blogs

http://photopeach.com/photos Make photoslideshows for the web. You can add sound. .......................................	http://picasaweb.google.com/home .................................Upload your photos for web slideshows here.
http://maps.google.com/ To add a map on your wiki or blog click on the 'My Maps' link and get started	http://www.youtube.com/watch?v=l0_K3F1UkuI&feature=fvw How to compress video files.